Rolling window screen



N. H. NELSON.

-ROLLING WJllDOW SCREEN. APPLICATION FILED, JAN. 2. 1920.

,Patented- Feb. 7, 1922.

2 SHEETS SH EET l.

' .f Q a N. H. NE LS ON. ROLLING WINDOW SCREEN.

APPLIC'ATION HLED JAN.2,1920

M Patented Feb. 7, 1922.

V2 SHEETS-SHEET 2.

ah'ume;

UNITED.

ROLLING w'innow SCREEN.

s'rA'rss PA Specification of Letters Patent.

EELS H. NELSON, F SPENCER, IQ'WA.

Patented Feb.v '7, 1922 Application filed January 2,1820. Serial No. 349,041.

To all'whom it may concern:

Be it known that 1, Nurs H. NELSON, a

- citizen of the United States, and a resident of Spencer, in the county of Clayand State of Iowa, have invented a certain new and useful Rolling lVindow Screen, of which the following is a specification.

The object of my invention is to provide a rolling window screen of simple, durabl and inexpensive construction.

Afurther object of myv invention isto provide a rolling window screen comprising, a pliable screen member mounted on a'roller, whereby the screen may be unrolled to cover the window opening or rolled up to position, where it will not be in the way and will not be affected by theweather.

A further object of my invention is to provide novel means for supporting and operating the roller, whereby the latter may occupy a minimum amount of space, and its operation be rendered easy.

A further. object of my invention'is to provide operating means, which" may be extended through the divider strip on the winframe, so that the slot, which must be cut in the sash will not .appear and will adunit a minimum amount of air to pass therethrough.

A further object of my invention is ,to so mount the roller that the supporting means therefor will not',interfere with the use of a storm sash in the window frame, and the use of the storm sash will not interfere with the operation of the screen should its use be necessary.

A further object of my invention is to so arrange the operating device for myroller, that it may be operated from either the inside or the outside of the window frame, and to provide novel means for rendering either operative device inoperative when desired.

With these and other objects in view, my

invention consists in the construction, arrangement and combination of the various parts of the device, whereby the objects contemplated are attained, as hereinafter more fully set forth, pointed out in my claims, and illustrated in the accompanying drawings, in which: I v

Figure 1 shows an elevation of a window members.

members 11 at the top is the top frame mom- I frame fromthe inside of the window, showing my screen placed thereon.

Figure 2 shows a similar view from the outside of the frame, the screen being rolled up to inoperative position.

Figure 3 shows a vertical, enlarged, sectional viewtaken on the line 3 3 of Figure 1.

.Figure 4 shows a similar view taken on the line 4 of Figure 2.

Figure 5, shows a horizontal, enlarged,

sectional view taken on the line 5-5 of Figure 2. 4

Figure 6 shows a similar View taken on the line 66 of Figure 2;

Figure 7 shows an enlarged, vertical, sectional view taken substantially through the center of the guide for the side edges of my screen. 7

Figure 8 shows a vertical, -enlarged, sectional view through the roller, which carries the screen.

Figure 9 shows a transverse, sectional view through the stiffening bar at the bottom of my screen.

Figure 10 is an enlarged, detail View i'llus-. tratingthe construction of the bottom bar.

Figures 11 and 12 are enlarged, detail Viewillustrating the mechanismfor throwing oneof the operative devices out of operative position, parts being broken away in the former figure to better illustrate the construction.

"-Fi'gure 13 is a vertical, enlarged, detail,

view illustrating the contact of the stifi'ening bar with the roller casing, when the screen is rolled up into the casing; and

Figuresl l and 15 illustrate another form of stiffening and guide members for my screen. I

Referring to theaccompanying drawings,

I have used the reference numeral 10 'to inwall, and the reference numeral 11 to indicate the bottom and top corresponding Extendmg between the frame} ber 12of the casing, and at the bottom are frame members 13 and 14 and a sill l5. Between the top and bottom frame members are the side frame members 16, which carry a divider strip 17. The member 12 also has a divider strip 17 extended thereacross.

These parts are of usual construction and form no part of my invention, except in so far as they furnish the support for the parts thereof and illustrate its position and-construction.

It will be understood that there are a certain number of definite disadvantages accompanying the use of the ordinary Window screen. with its frame, among which may be mentioned the fact that the screen is exposed to damage from the weather and other sources, whether it is in position in the Window frame or stored away during the time that the screen is not needed.

It is also somewhat difficult to remove the screen and frame and to replace it,' and it is to obviate theseand other disadvantages that I have devised -my improved rolling screen. r

The roller device is mounted Within a substantially rectangular casing, which I have designated generally by the letter A, and which is designed to be secured in any suit-able manner to the frame members 12 and 16'0r the members IO and 11, in position to fill the top of the casing outside of the divider strip 17.6". This casing comprises anfioutside wall 18, top and bottom walls 19 and an inner shoulder 20 formed integral with the top 1.9 and desi ned torest against the outeran'd lower sur aces of the divider strip 17 at the top of the window.

J ournaled longitudinally within this cas ing is the roller device, which comprises a central bar 21 around which 18 disposed asubstantially tubular casing 22, having an.

elongated slot 23 therein. The upper edge of my screen is designed to be secured within this roller folding over the upper edge of the screen B, then sliding the folded portion onto the rod 21, so that the end of the screen will project outside of the slot 23.

Referring to Figure 8, it Will be seen that this construction will permit ready detaching of the screen to replace or repair the latter, and at the same time will permit the roller to be rolled in either direction to roll up the screen.

The ends of the roller, which I have designated'generally by the letter C, are journaled in the ends 24 of the casing A at 25, and fixed to'one end of the roller C is a sprocket wheel 26. Fixed to the innensurface of the side frame member 16 adjacent to the sprocket 26'is a bracket member 27, having a substantial opening therein designed to form a bearing for a pintle 28, upon which is mounted a sprocket wheel 29. Outside of the bracket 27, a ratchet wheel 30 is secured to the pintle 28, and a dog 31 is pivotally connected to the bracket to coby the frictional members.

act with the ratchet 30. The dog 31 is riveted, tightly enough to the bracket 27, so that when it is raised out of engagement with the ratchet, it will remain in that posi- I tion.

This result may also be accomplished by slightly bending either the dog 31 or the bracket 27, so-that when the dog is moved to inoperative position, it will be held there engagement of the two The sprockets 29 and 26 are connected by a chain 32 and a detachable crank 33 is ar ranged to coact with the squared end of the .pintle 28 topermit the crank to rotate the latter.

From the construction of the parts just 'described,.it Will be seen that rotation of the Suitable means, which will hereinafter be described, are arranged at the bottom of the screen to hold it from upward movement,.

and it will be seen that whenl these means are engaged with the bottom of the screen, then the dog 31 may be operated to tighten the screen, by rotating the roller, and hold it with tension thereon to give the screen a neat appearance and to prevent it from undue wear. In this connection, it will be noted that the chain 32 passes through the divider strip 17 in the side of the casing for a purpose, which will hereinafter be made clear. I

For guiding the sides of the screen when it is being rolled up or unrolled, I have provided the following described means: At intervalson the side of the screen are clips designated generally by the letter D, which comprise 'two pieces of sheet metalheld from movement relative to each other by tongues 34 punched out of one piece and extended through a slot in the other piece and then bent over.- v

The ends of these clip members are turned outwardly away from each other somewhat at 35. A guide member is formed by bending a strip of sheet metal upon itself to posia stiffening rod E, which is clearly shown in Figures 9 and 10. This comprises a single strip of sheet metal bent upon itself at 35. The portions adjacent to the bend 35" are then again ;.bent at right angles at 36.

The screen '13 may then beinserted between the edges of the strip and the bend 35 together with the bend 36 will providea laterally extending edge at the bottom of the stiffening rod fora purpose, which will hereinafter be made clear;

The screen B is fastened between, the

edges ofthe stiffening bar, by means :of

tongues 37 which are punched out of onev of the sides of thebar and extended through a slot in the other side of the bar, and

stiffening bar to extend laterally therefrom on the sideopposite the flange, 'and adapted" to coact with the bottomwall 19 of the cas-v ing A to prevent the end of the screen from being rolled up into the casing, where it would be inaccessible, when it was again desired to unrollthe screen.

From the construction of the parts just describedfit will be seen that whenthe screen is to be unrolled', the stiffening bar ,E maybe grasped by theoperatonand screen simply pulled down between the side guides, until the stiffening bar comes in contact with .the bottom frame member 13.

For holding the stifi'ening'bar in this posi-- tion, 1 have provided-the following devices. hese devices compnse a spring device 39,

" which is secured to the divider strip .17 by a bearing for stifi ening' bar.

an angular extension 40, and which normally extends into the path of movement of the reaches the frame member 13, then the flange thereon will clear the lower end of the spring 39, and the end will spring back into the path of movement of the. flange, thereby prevent ing the stiffening bar from moving upwardly away from the frame member 13. This construction is illustrated in Figure 3.

A. handle member 41 is preferably formed integral with the spring 39 and extended inwardly therefrom, whereby the end of the spring may be pulled out of contact with the flange on the stiffening bar to permit the latter to be raised when the screen is to be rolled up.

For holding the center of the stiffening bar in position, I provide a device compr1s ing a strip 42, which is secured to the frame a guide member illustrated in Figures 14- and member 13, at the center thereof and forms a wire 13, the ends of which are bentat right angles to each other. The wire =13 may he slid in its bearing for forming a means to engagethe on "the stiffening bar or for moving to inoperative position.

When the screen is rolled down to the po= sition shown in Figure 3, and the stiffening bar engaged by the clips described, then the crank 33 ma screen and p ace the screen under tension, as has hereinbefore been described, and the When the-stiffening bar be rotated to wind up the.

dog 31 will then engage the ratchet 29 to hold the screen under this tension.

For operating my improved roller screen dflice from I frame, I haveprovided the following mechanism:'

. Fixedto' the end of the roller CTopposite the sprocket 26 is a-worm wheel 44 designed -to coact'with'a worm'45, which is' preferably .formedintegral with the shaft 46. The inthe. outside of the window.

nor end ofthe shaft 4=6 isjourrialed in the shoulder of the top frame member 19 of i the casing"A, and the outer end of the shaft 46 is provided with a crank 47.

.The wall 18 of the casing Al adjacent to the crank 47 is slotted to. receive the shaft in Figure 12.

An auxiliary bearing bracket 49 may also i be secured to the wall 18, if desired. A lock-' ing lever 50 is pivoted at 51 to 'the wall 18 in such position thatit may either hold the shaft 46 in position, where the worm 45 will {46, as is illustrated by the dotted lines 48 contact with the worm wheel-44 or may be swung to position to hold the shaft in position where the worm will be out of engagement with the worm wheel, as is illustrated by the dotted lines in'Figure 11'.

' From. the construction of the parts just described, it will be seen that the shaft 46 extends outwardly from the casing of the.

windowand may be rotated by the crank 47, when desired-to rotate the roller C, and conse uently to roll up the screen member In connection with the chain operation of the roller, it will be noted that the'positioning of the sprockets26 and 29 is such that the chain connecting them may be extended through the divider strip 17, so that the'top' side edge of the upper sash may be slotted to 'allow the chains to pass therethrough withoutinterfering with the operation of the chains or free sliding movment of the sash. This is an important feature of my improved construction, as it does not make it necessary to make holes through the sash,

which would possibly permit cold air ,to' enter through the sash, and as it does not disfigure the sash in a place where it shows.

Attention is also directed to the constructi'on of the screen reinforcing device and 15, wherein a wire of somewhat resilient material, but more especially of pliable mate struction and arrangement of the parts of my improved device, without departing from the essential features and purpose of my invention, and it is my intention to cover by my claims any modified forms of structure or use of mechanical equivalents, which may be reasonably included within their scope.

I claim as my invention:

1. In a device of the class described a roller, a flexible screen secured thereto and adapted to bero'lled thereon, a frame'on which said roller is supported, means on said frame for engaging one edge of said screen when unrolled and means adapted to draw said screen to various degrees of tensions and for locking said screenfu'nder such various degrees of tension, saidtmeans comprising a sprocket operatively connected to said first sprocket, a pawl devicef for holding said second sprocket against movementin one directionand a crank whereby rotation may be im arted to said second sprocket;

2. I a device of the class described, a

roller, a flexible screen secured thereto and adapted to be rolled thereon, a frame on which said roller is. supported, means on sprocket on the end of said roller, a second sprocket laterally spaced from .said first sprocket, a chain connecting said sprockets, a ratchet wheel ,onsaid second sprocket, a pawl coacting with said ratchet, whereby said sprockets may be turned in only one direction, and a removable crank for impartin rotation to said second sprocket.

, Des oines, Iowa, December 13, 1919.

NELS H. NELSON. 

